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06 January 2017 AGE-NC Project No. 01-0877 Page 2 of 6 • Permitting and pre-field work activities, • Drilling of soil borings, soil-vapor well installation, • Collection of soil-vapor samples, • Preparation of report of findings. Each of these tasks are discussed below in detail. 2.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES Applicable drilling and site assessment permits will be submitted to the San Joaquin County Environmental Health Department (EHD), while encroachment permits will be obtained from the City of Stockton Public Works Department. As required by EHD permitting, a health and safety plan will be prepared in accordance with Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities (National Institute for Occupational Safety and Health Administration, U.S. Coast Guard and U.S. Environmental Protection Agency, 1985). Prior to drilling activities, each proposed drilling location will be clearly marked and a utility clearance obtained through Underground Service Alert. 2.2. DRILLING AND SAMPLING AGE proposes to drill three shallow, soil borings (SV-1 through SV-3) at the site as part of a soil-vapor investigation and to evaluate potential vapor intrusion. Proposed soil boring locations are illustrated on Figure 2. Based upon laboratory results of soil samples and groundwater monitoring well samples collected during the investigation, AGE proposes the soil-vapor well pilot boring locations in the following areas: • Soil boring SV-1 will be located at the eastern edge of the property building, and approximately 15 feet south of the former UST area, (eastern wall of building). • Soil boring SV-2 will be located at the eastern edge of the property building, and approximately 15 feet west of the former UST area (northeastern corner of building). • Soil boring SV-3 will be located across North Hunter Street, and approximately 75 feet northeast of former UST area (near monitoring well MW-5). Soil and soil-vapor samples will be collected from borings SV-1 through SV-3 at depths of approximately 5 feet (soil) and 6a/2 feet (soil-vapor) below surface grade (bsg). Field procedures for advancement of soil borings, collection of soil sample, installation of soil- vapor sampling points and collection of soil-vapor samples are presented in Section 3.2. Advanced GeoEnvironmental,Inc.